Homework Answers
ANSWER
RecABCD protein is involved in chi sequence specific production of ssDNA from dsDNA and its recombination into other dsDNA and ssDNA.
RecABCD or RecBCD is an enzyme or protein which are present in E.coli bacteria which intiate the recombination repair. The homologus pairing is also begins with help of this protein..
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29. Which protein(s) is(are) involved in the Chi sequence-specific production of ssDNA from dsDNA and its...
Which protein(s) is(are) involved in the Chi sequence-specific production of ssDNA from dsDNA and its recombination...
Which protein(s) is(are) involved in the Chi sequence-specific production of ssDNA from dsDNA and its recombination into other dsDNA or ssDNA? Select one: a. Rho b. RecABCD c. RuvABC d. NusA e. None of these
Holiday junction (HJ) is a very important mechanism for natural DNA recombination. HJ catalyzes DNA recombination...
Holiday junction (HJ) is a very important mechanism for natural DNA recombination. HJ catalyzes DNA recombination between _________ using a special protein complex. Select one: a. two dsDNA b. one dsDNA and one ssDNA c. two ssDNA d. All of these e. None of these
Transcription is terminated, when a characteristic RNA structure _____ is formed by local RNA palindromic sequences...
Transcription is terminated, when a characteristic RNA structure _____ is formed by local RNA palindromic sequences at the 3’- end. The structure interacts with RNAP-bound NusA, causing dissociation of RNAP from template DNA. The RNAP dissociation is stimulated by sequence-specific binding of _____ proteins to the transcribed RNA, enhancing termination of transcription. Select one: a. hairpin ;;;; rho b. hairpin ;;;; sigma c. beta-turn ;;;; rho d. beta-turn ;;;; sigma e. None of these
34. Transcription is terminated, when a characteristic RNA structure is formed by local RNA palindromic sequences...
34. Transcription is terminated, when a characteristic RNA structure is formed by local RNA palindromic sequences at the 3-end. The structure interacts with RNAP-bound NusA, causing dissociation of RNAP from template DNA. The RNAP dissociation is stimulated by sequence specific binding of proteins to the transcribed RNA, enhancing termination of transcription Select one a. hairpin - rho b. hairpin sigma c. beta-turn rho d. beta-turn sigma e. None of these
Which is incorrect descriptions of the genetic event initiated by the HIV reverse transcriptase (RT) upon...
Which is incorrect descriptions of the genetic event initiated by the HIV reverse transcriptase (RT) upon the HIV infection? Select one: a. RT catalyzes initial synthesis of ssDNA using viral genomic RNA as the template. b. The first RNA template is degraded after ssDNA synthesis. c. The whole process is completed after synthesis of dsDNA. d. tRNAs are adopted as the first primers. e. None of these
28. Which is incorrect descriptions of the genetic event initiated by the HIV reverse transcriptase (RT)...
28. Which is incorrect descriptions of the genetic event initiated by the HIV reverse transcriptase (RT) upon the HIV infection? Select one: a. RT catalyzes initial synthesis of ssDNA using viral genomic RNA as the template. b. The first RNA template is degraded after ssDNA synthesis. c. The whole process is completed after synthesis of dsDNA. d. tRNAs are adopted as the first primers. e. None of these
You've identified a gene likely involved in a human disease. You BLAST the predicted protein sequence...
You've identified a gene likely involved in a human disease. You BLAST the predicted protein sequence for the gene against the database of known protein sequences and see that a domain of your unknown protein is similar to the nuclease domain of a RISC complex protein. Therefore... Select one: a. The unknown protein is likely a component of the RISC complex b. The unknown protein is likely to be a restriction endonuclease c. The unknown protein is likely to be...
Which is the factor(s) involved in the regulation of gene activity? Select one: a. Transcriptional repressor/activator...
Which is the factor(s) involved in the regulation of gene activity? Select one: a. Transcriptional repressor/activator proteins, which bind to the operator/enhancer sequence regions. b. SAM binding to a riboswitch mRNA. c. Alterations in mRNA conformations by SAM during the transcription. d. All of these. e. None of these.
The LacI protein is released from the operator sequence upon binding of IPTG, allowing the transcription...
The LacI protein is released from the operator sequence upon binding of IPTG, allowing the transcription of all the genes within the lac operon. In this case, LacI is called a transcriptional _______. In comparison, CRP binds to the CRP binding site sequence upon binding of cAMP, enhancing transcription. CRP is called a transcriptional _______. Select one: a. activator ;;;;; activator b. activator ;;;;; repressor c. repressor ;;;;; activator d. repressor ;;;;; repressor e. None of these
45. Which is the factor(s) involved in the regulation of gene activity? Select one: O a....
45. Which is the factor(s) involved in the regulation of gene activity? Select one: O a. Transcriptional repressor/activator proteins, which bind to the operator/enhancer sequence regions. O b. SAM binding to a riboswitch mRNA. O c. Alterations in mRNA conformations by SAM during the transcription. O d. All of these. O e. None of these. 13. The ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the bases are synthesized separately and...
34. Transcription is terminated, when a characteristic RNA structure is formed by local RNA palindromic sequences at the 3-end. The structure interacts with RNAP-bound NusA, causing dissociation of RNAP from template DNA. The RNAP dissociation is stimulated by sequence specific binding of proteins to the transcribed RNA, enhancing termination of transcription Select one a. hairpin - rho b. hairpin sigma c. beta-turn rho d. beta-turn sigma e. None of these
You've identified a gene likely involved in a human disease. You BLAST the predicted protein sequence for the gene against the database of known protein sequences and see that a domain of your unknown protein is similar to the nuclease domain of a RISC complex protein. Therefore... Select one: a. The unknown protein is likely a component of the RISC complex b. The unknown protein is likely to be a restriction endonuclease c. The unknown protein is likely to be...
45. Which is the factor(s) involved in the regulation of gene activity? Select one: O a. Transcriptional repressor/activator proteins, which bind to the operator/enhancer sequence regions. O b. SAM binding to a riboswitch mRNA. O c. Alterations in mRNA conformations by SAM during the transcription. O d. All of these. O e. None of these. 13. The ring is built onto ribose-5-phosphate of PRPP for its de-novo nucleotide biosynthesis, while the ring structure of the bases are synthesized separately and...
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